Rotary piston-pump.



Patented Sept. 7, 1915.

W) and; I

yen/o r COLUMBIA PLANOGRAPH c0 WASHINGTON, D. c.

vain e svnnnnrnnnn or 1VEAQSEIL'UD,VESTRE 'AKER, nnanfoirarsrranm, nonwav. I p

' heale jr rsro v-ruivrr.

To all whom it may concern."

ject of the King of Norway, residinght llladserud, Vestre ,Aker, H6l1;Cl11lSt1itIll3,

Norway, have invented certainnew and use;

i'ul Improvements in Rotary Piston-Pumps; and I do herebyldeclare the following to be a full, clear, and exact description oifthe invention, such as will enable others, skilled in the art to which it appertains to make and use the same, reference being had to the acconipanying drawings, and to letters orfig-r uresof reference marked thereon, which form a part of this specification. h p This invention relates to piston pumps having cylinders diametrically disposed in a rotary shell wherein a relative reciprocating movement between the cylinders and pistons is obtained by rotating the shell on an axis displaced from the axis about whlch thepistons are rotated. l l

The object of the invention is to provide a pump of this kind wherein a series of diametrically disposed pistons and cylinders may be arranged along the axis of the r0- tary shell, especially with the idea of using the apparatus as a central plunger lubricator. This is attained by the construction disclosed herein, reference being had to t he accompanying drawings in which, 7

Figure 1 represents a radial cross section of a rotary pump of this kind, takenon line 1-1 of Fig. 2; and Fig; 2 represents a central vertical section through the pump of Fig. 1. I l .1

In the embodiment shown 1n the drawings, the plstons'a are lnserted 1n andfastoned to the shaft 42, which is provided with a slotted crank-guide f at each of its ends,

embracing a rotar guide head POne of, the guide heads carries a ournal mounted in the end wall of the tank 9, while the other guide head is a part ofthe driving shaft h. The shell 0 carries the diametrically disposed cylinders t and is fitted in the casing Z) which is integral with the-surrounding oil tank 9. The axis about which the shaft (Z is rotated is parallel to but displaced from the axis of rotation of the shell c. The shaft 72, drives the shaft (Z and the p'istons a pull the shell 0' around in the casing Z), reciproeating movements between the pistons a and the cylinders 25 being produced as a result of thedisplaced disposition of the axes of rotation. The arrangement provides for the necessary relative slidingmovements of the f ing: outlets, 7:.

. ton rotatable about a transverse axis piston. r I

A. In rotary piston pumps, a rotatable 3 shell carrying a plurality of radially disposed pump cylinders, a rotatable shaftcar rying a'pluralityof pistons reciprocative in i Serial No. $28,186;

. l jf r i se en 6f l i Patent PatentedSept. 7, 19115. I Application filed March so, 1914. i a

f during. the rotation of the shaft A.

The casing his providedwith inlets t'cin. line with the individualapairs of. diametric'ally disposed pumps, and with correspond During rotation in the direc i guide heads-sin theslots of the crank-guide Belt known that I, Svnnnnlnumt, a Sl1l3 tion'indicated or .other mediinn from the tank gninto the cylinders, while the cylinders register with the inlets 2', and they discharge it underpresin Fig. fl, the pistons suck oil sure while the cylinders register with the outlets I As shown, the outlets]: commne ni'cate with individual conduits adapted to be connected to pipes leading to different parts of the machine to be lubricated, for

. example.

Having thus described my invention, what I claimis-z- I 1 1. In rotary piston pumps, a pump cyhn der rotatable about a transverse axis, a p ston rotatable about a transverse axis eccentric relatively to the axis of rotation of the cylinder and reciprocative therein during rotation, and driving means for rotating the cylinder and piston onsaid axes.

2. In rotary piston pumps, a pump cylin Y der rotatable abouta transverse axis, a piston rotatable about a transverse axis eccentric relatively to the axis of rotation of the cyhnder and rec1procat1ve therein during rotation, and driving means for rotating the I cylinder and piston on said axes and including a sliding connection compensating for the eccentricity of said axes.

8. In rotary piston pumps, a pump oylinder rotatable about a transverse axis,

eccentric relatively to the axis ofrotation of the pump. cylinder and reciprocative therein during rotation, and drivingmeans for rotating the cylinder and piston on said axes and including a crank-guide and agguide head slidable therealongtransversely of the.

respective cylinders and having a crank guide at each end, a guide-head for each crank-guide slidable therealong transversely oi the pistons and journaled for rotation on an axis eccentric tothe axis of rotation of the shell, and driving means for rotating the shell and shaft. 7

5. In rotary piston pumps, a tank, a cylina pisder fastenedto tiieiiank, a shellrotatablein f 1 ';-the cylinder and carrying a plurality of dia-- metricallydisposed-pump cylinders, arota-' v 'table shaft carrying a plurality of pistons 5- reciprocative in respective pump cylinders j ""'and 'having a crank5guide at each end, a

[guide-head for each crankguide'slidable jj oiirnaled for rotation on an axiseccentric l ,-passage from thetank -arranged to commu- 1 nicate with the pumpcylinders during the 5' suiction' stroke of the pistons therein, and

1 .a an outlet passage arranged to communicate Withgthe-pump cylinders during; the dischargestroke-of the pistons'therein.

6. 111 rotary piston '1 pumps; a rotatable l-sh9l1; car y n -p um i y f P P cylin co iiesof this pat'eiit maybe obtained for five cents eaclnby addressing the 'I i Washington,1). 0. v a

vtherealong transversely of'the pistons and "tothe axis of rotation :Off the shell, driving {means for, rotating the fSl'lelli and shaft,;a.

ders," a rotatable shaft rotatable on an axis eccentric relatively to the axis of rotation of said'shellandcarrying a plurality of pistons reciprocative in respective cylinders,

andzdriving means engaged With said shaft to drive it and COIIIPIISlIlg'ZL crank-guide at each end of said shaft, and a rotating guide head for each crank-guide slidable therealong transversely of the pistons and journalccl on an axis eccentric to the axisof rotation of the shell. v

' Intestimonythat' I claim the foregoing as o my invention I have signed 'my name in presence of twosubscrlbing WItIIGSSES.

I svERnE THUNE. Witnesses: r i M. EjGo'r'rooMsniv,

LINDSTIAN.

Commissioner of Patents, 

